Ireally do not understand this unit can someone me.
just answer what you know.

if you cant read questions will be in comments hopefully

3) 441 m² (C)

Step-by-step explanation:

the square root of 29² - 20² is = 21 (side length of Q

21 is all of the side lengths since it's a square.

so multiply 21 by itself:

21x21= the area of q= 441 m²

98 784 cm³

Step-by-step explanation:

Formula for volume of sphere: × × r³

Volume of sphere = × × 42³

                              = × 74 088 ×

                              = 98 784 cm³